JPS5930645Y2 - Tractor work equipment attachment - Google Patents

Description

[Detailed description of the invention] The present invention is a work equipment attachment for a tractor that can easily transmit the power of the power take-off shaft located at the rear of the tractor to the front of the tractor when necessary. The mechanism will be described in detail below with reference to the accompanying drawings showing one embodiment.

A transmission shaft 4 is attached to a mounting frame 3 having a mounting bracket 2 that is fixed along the bottom of the tractor 1 and having approximately the length of the tractor.
be constructed so that it can rotate freely.

The rear end of this transmission shaft 4 and a power take-off shaft 5 protruding from the rear of the tractor 1 are connected by a transmission mechanism a.

A work equipment mounting part 7 is provided at the front part of the mounting frame 3 to which a work equipment 6 such as a grass cutter is mounted.

A board 17 is attached to the work equipment attachment portion 7 so that the front surface can be turned left and right.

A link type lifting mechanism is provided on this board 17.

A working machine 6 is attached to this lifting mechanism.

The transmission shaft 4 is also connected to the power acquisition section 27 of the working machine 6.

It will be explained in more detail.

In the case of this figure, the mounting bracket 2 is fixed to the rear and middle parts of the mounting frame 3, and the mounting plate 8 is fixed to the front part of the mounting frame 3. 1
I am trying to fix it to .

The mounting frame 3 in this figure is made of channel steel.

Further, the transmission shaft 4 is rotatably installed by a pillow unit 9.

The transmission mechanism a in this figure has a main sprocket 1 on the power take-off shaft 5.
0 is fixed, and the sprocket 11 is fixed according to the transmission shaft 4,
A chain 12 is suspended between the main sprocket 10 and the subordinate sprocket 11.

Further, the work equipment mounting portion 7 has work equipment mounting plates 13 fixed to the front left and right sides of the mounting frame 3.

In the case of this figure, a positioning pin 14 is provided horizontally protruding forward in the center between the work equipment mounting plates 13.
An arcuate elongated hole 15 is formed on the radius of this positioning pin 14.

In the lifting mechanism shown in the figure, a board 17 having a positioning hole 16 that fits into the positioning pin 14 is fixed by overlapping with a bolt 18 fitted into an arcuate long hole 15, and cylinder mounting plates 19 are installed on the left and right sides of the upper part of this board 17. An upper bearing plate 20 is provided on both left and right sides between the cylinder mounting plate 19, and a lower bearing plate 21 is provided below the upper bearing plate 20. A hydraulic cylinder 22 is mounted on the tip of the cylinder mounting plate 18. The base is pivotally connected, and the cylinder rod 23 of this hydraulic cylinder 22
The tip of the upper link plate 24 and the lower link plate 25 are pivotally connected to the working machine 6, and one ends of the upper link plate 24 and the lower link plate 25 are pivotally connected to the upper bearing plate 20 and the lower bearing plate 21, respectively. The other end thereof is pivotally connected to the working machine 6.

That is, when the hydraulic cylinder 22 is operated, the working machine 6 is raised and lowered by this lifting mechanism.

In addition, this diagram shows the transmission shaft 4 so that there is no problem in raising and lowering the work equipment 6.
A universal joint 26 is connected to the tip of the .

Reference numeral 28 denotes a stopper tilt used when rotating the base plate 17 about the positioning pin 14 to position the working machine 6 at an appropriate angle.

There are some tasks that are best done behind the tractor and some tasks that are best done in front of the tractor.

Examples of work that can be done behind the tractor are plowing, pesticide spraying, and land leveling, while tasks that are best done in front of the tractor include grass mowing, weeding, harvesting, and snow removal. be.

However, since the power extraction shaft for extracting power from the tractor and driving each working machine is provided at the rear of the tractor, it is better to drive the working machines that perform the work in front of the tractor. was extremely troublesome.

The present invention solves these drawbacks all at once, and includes a mounting frame 3 that has a mounting bracket 2 that is fixed along the bottom surface of the tractor 1, and a transmission shaft 4 that is rotatably mounted on a mounting frame 3 that has approximately the length of the tractor. The rear end of this transmission shaft 4 and the tractor 1
A power take-off shaft 5 protruding from the rear of the frame is connected by a transmission mechanism a, and a work equipment mounting part 7 is provided at the front part of the mounting frame 3 to which a work implement 6 such as a lawn mower is attached. Since the transmission shaft 4 is connected to the power acquisition part 27 of the work implement 6, when you want to install the work implement 6 in front of the tractor 1, you can simply fix the work implement 6 to the bottom of the tractor 1 using the mounting bracket 2. can be connected to the front of the tractor 1, and the power of the working machine 6 can be input from the tractor 1.

On the other hand, when it is desired to attach the working machine 6 to the rear of the tractor 1, the present product can be removed simply by removing the mounting bracket 2.

Therefore, it can be easily installed or removed when necessary, which is extremely convenient.

Furthermore, although the bottom surface of the tractor 1 is quite uneven, it can be manufactured and placed in advance to correspond to the tractor 1, making it easier to attach and detach the product.

Furthermore, the base plate 17 is attached to the work equipment mounting portion 7 so that the front surface can be rotated left and right, a link type lifting mechanism is disposed on the base plate 17, and the work implement 6 is attached to this lifting mechanism. By rotating the work implement 6 left and right, the installation angle of the work implement 6 relative to the ground can be arbitrarily varied, and by using the lifting mechanism, the relative height to the ground can be varied. The work machine 6 can be deployed, which is extremely practical.

Furthermore, since the proposed product has a simple structure, it can be mass-produced at low cost.

As described above, according to the present invention, a tractor work equipment attachment device is provided which has excellent practical effects such as being able to easily transmit the power from the power take-off shaft located at the rear of the tractor to the front of the tractor when necessary. will be provided.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall side view, FIG. 2 is a perspective view of the main parts, and FIG. 3 is a longitudinal sectional view. a...Transmission mechanism, b...Lifting mechanism, 1
...Tractor, 2...Mounting bracket, 3...Mounting frame, 4...Transmission shaft, 5
...Power take-off shaft, 6...Work equipment, 7.
...... Work equipment mounting part, 17 ...... Board, 27
......Power acquisition section.

Claims (1)

[Scope of utility model registration request] A transmission shaft is rotatably installed on a mounting frame having a mounting bracket fixed along the bottom of the tractor and having approximately the length of the tractor, and the rear end of the transmission shaft and a power mounting shaft protruding from the rear of the tractor are connected. Connected by a transmission mechanism, a work equipment mounting part is provided at the front of the mounting frame to which a work equipment such as a lawn mower can be attached.A board is attached to this work equipment mounting part so that the front surface can be rotated left and right, and a link-type lifting mechanism is attached to this board. 1. A work equipment attachment for a tractor, characterized in that a work equipment is attached to the elevating mechanism, and the transmission shaft is connected to a power acquisition portion of the work equipment.